Depolution sytstem faulty. Egr cancellation.

Hello friends. I am new among you, I am 407 users for 3 months. My problem is big black smoke in acceleration. As you know, most likely the problem. Sometimes the engine malfunction light is on and the depression system fails. In general, this happens when the gas is loaded and suddenly accelerates. Then it ends on its own. So egr problem. I think of canceling with software. An electrical friend asked for software costs 600 and 200 for himself. Do you think I should cancel or should I install a new one? I could not decide. I would like to benefit from the knowledge of friends who have experience. Everyone on the Internet is in a different mind. There is also a satisfied one who says no smearing :)). Good evening.

Egr cancellation does not exceed 250 -300 lira. 1.6 for Hdilar let's get 100 in mechanical cancellation

800 pounds for a lot of money software and cancellation. I think you will get a new one even if it is a subsidiary industry.